piston slap usually happens with forged piston because they expand and contract more with hot and cold. Does it go away when it is fully warmed up? Does it happen only when you first start it up? Engines sometimes make tapping noises until the oil works its way through to the top of the engine.
__________________ 97 Cobra-03 Cobra t56 and alum DS, SPEC111 clutch, FRPP 4:10,T&J Performance Forged 4v(8.9:1), Manley rods, Novi 2000 w/ Fast Track A/A I/C, Barry Grant Fuel syst., BBK longtubes and H-pipe, MSD ignition, Detroit True Track, Magnaflows, 315 NT01's on 17 x 11's, KB BAS, SCT tune and about a million other things. 575 RWHP. Going into the shop this winter, looking for 650 RWHP. | 
Possible Piston Slap??? 
